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Submission #338443

# Submission time Handle Problem Language Result Execution time Memory
338443 2020-12-23T06:22:05 Z BY_KUTBILIM Chessboard (IZhO18_chessboard) C++14
70 / 100
 260 ms 2156 KB 
/** @BY_KUTBILIM **/
#include <bits/stdc++.h>
using namespace std;

#define ff first
#define ss second
#define pb push_back
#define ll long long
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).end()

const int inf = (int)1e9+7;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie();

    int k;
    ll n;
    cin >> n >> k;
    int x1[k], x2[k], y1[k], y2[k];
    vector<ll> div;
    div.pb(1);
    for(int i = 2; i <= sqrt(n); i++){
        if(n % i == 0){
            div.pb(i);
            if(i != n / i){
                div.pb(n/i);
            }
        }
    }
    sort(all(div));
    vector<ll> cnt1((int)div.size(), 0), cnt0((int)div.size(), 0);
    for(int i = 0; i < k; i++){
        cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
        x1[i]--;
        y1[i]--;
        for(int j = 0; j < (int)div.size(); j++){
            if((x1[i] / div[j] + y1[i] / div[j]) % 2 == 0)cnt0[j]++;
            else cnt1[j]++;
        }
    }
    ll ans = n * n;
    for(int i = 0; i < (int)div.size(); i++){
        ans = min({ans,
        n * n / (div[i] * div[i]) / 2ll * (div[i] * div[i]) + (div[i] * div[i]) - cnt0[i] + cnt1[i],
        n * n / (div[i] * div[i]) / 2ll * (div[i] * div[i]) - cnt1[i] + cnt0[i]});
    }
    cout << ans;

    return 0;
}
/*

6 8
3 3 3 3
1 2 1 2
3 4 3 4
5 5 5 5
4 3 4 3
4 4 4 4
2 1 2 1
3 6 3 6

*/

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 1260 KB Output is correct
2 Correct 7 ms 620 KB Output is correct
3 Correct 16 ms 1004 KB Output is correct
4 Correct 17 ms 1004 KB Output is correct
5 Correct 21 ms 1132 KB Output is correct
6 Correct 19 ms 1004 KB Output is correct
7 Correct 4 ms 640 KB Output is correct
8 Correct 14 ms 876 KB Output is correct
9 Correct 36 ms 1772 KB Output is correct
10 Correct 19 ms 1132 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 12 ms 748 KB Output is correct
17 Correct 28 ms 1644 KB Output is correct
18 Correct 42 ms 1864 KB Output is correct
19 Correct 70 ms 1644 KB Output is correct
20 Correct 75 ms 2028 KB Output is correct
21 Correct 27 ms 1644 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 25 ms 1024 KB Output is correct
24 Correct 33 ms 1772 KB Output is correct
25 Correct 4 ms 492 KB Output is correct
26 Correct 21 ms 1260 KB Output is correct
27 Correct 28 ms 1516 KB Output is correct
28 Correct 35 ms 1772 KB Output is correct
29 Correct 11 ms 876 KB Output is correct
30 Correct 1 ms 364 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 1260 KB Output is correct
2 Correct 7 ms 620 KB Output is correct
3 Correct 16 ms 1004 KB Output is correct
4 Correct 17 ms 1004 KB Output is correct
5 Correct 21 ms 1132 KB Output is correct
6 Correct 19 ms 1004 KB Output is correct
7 Correct 4 ms 640 KB Output is correct
8 Correct 14 ms 876 KB Output is correct
9 Correct 36 ms 1772 KB Output is correct
10 Correct 19 ms 1132 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 12 ms 748 KB Output is correct
27 Correct 28 ms 1644 KB Output is correct
28 Correct 42 ms 1864 KB Output is correct
29 Correct 70 ms 1644 KB Output is correct
30 Correct 75 ms 2028 KB Output is correct
31 Correct 27 ms 1644 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 25 ms 1024 KB Output is correct
34 Correct 33 ms 1772 KB Output is correct
35 Correct 4 ms 492 KB Output is correct
36 Correct 21 ms 1260 KB Output is correct
37 Correct 28 ms 1516 KB Output is correct
38 Correct 35 ms 1772 KB Output is correct
39 Correct 11 ms 876 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 66 ms 1772 KB Output is correct
42 Correct 40 ms 1804 KB Output is correct
43 Correct 47 ms 1644 KB Output is correct
44 Correct 47 ms 1772 KB Output is correct
45 Correct 38 ms 1900 KB Output is correct
46 Correct 71 ms 1772 KB Output is correct
47 Correct 33 ms 1644 KB Output is correct
48 Correct 43 ms 1644 KB Output is correct
49 Correct 36 ms 1644 KB Output is correct
50 Correct 235 ms 1900 KB Output is correct
51 Correct 251 ms 2156 KB Output is correct
52 Correct 232 ms 1772 KB Output is correct
53 Correct 260 ms 1900 KB Output is correct
54 Correct 229 ms 1772 KB Output is correct
55 Correct 256 ms 1900 KB Output is correct
56 Correct 224 ms 1772 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 24 ms 1260 KB Output is correct
10 Correct 7 ms 620 KB Output is correct
11 Correct 16 ms 1004 KB Output is correct
12 Correct 17 ms 1004 KB Output is correct
13 Correct 21 ms 1132 KB Output is correct
14 Correct 19 ms 1004 KB Output is correct
15 Correct 4 ms 640 KB Output is correct
16 Correct 14 ms 876 KB Output is correct
17 Correct 36 ms 1772 KB Output is correct
18 Correct 19 ms 1132 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 12 ms 748 KB Output is correct
35 Correct 28 ms 1644 KB Output is correct
36 Correct 42 ms 1864 KB Output is correct
37 Correct 70 ms 1644 KB Output is correct
38 Correct 75 ms 2028 KB Output is correct
39 Correct 27 ms 1644 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 25 ms 1024 KB Output is correct
42 Correct 33 ms 1772 KB Output is correct
43 Correct 4 ms 492 KB Output is correct
44 Correct 21 ms 1260 KB Output is correct
45 Correct 28 ms 1516 KB Output is correct
46 Correct 35 ms 1772 KB Output is correct
47 Correct 11 ms 876 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 66 ms 1772 KB Output is correct
50 Correct 40 ms 1804 KB Output is correct
51 Correct 47 ms 1644 KB Output is correct
52 Correct 47 ms 1772 KB Output is correct
53 Correct 38 ms 1900 KB Output is correct
54 Correct 71 ms 1772 KB Output is correct
55 Correct 33 ms 1644 KB Output is correct
56 Correct 43 ms 1644 KB Output is correct
57 Correct 36 ms 1644 KB Output is correct
58 Correct 235 ms 1900 KB Output is correct
59 Correct 251 ms 2156 KB Output is correct
60 Correct 232 ms 1772 KB Output is correct
61 Correct 260 ms 1900 KB Output is correct
62 Correct 229 ms 1772 KB Output is correct
63 Correct 256 ms 1900 KB Output is correct
64 Correct 224 ms 1772 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Incorrect 1 ms 364 KB Output isn't correct
67 Halted 0 ms 0 KB -